Belt-cutting machine



Dec. 2 8 1926. 1,612,282

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BELT CUTTING MACHINE File Manns. 1924 2. sheets-snee. 2

@Lamm Patented Dec. 28, 1926.

UNITED STATES PATENT OFFICE.

WILLIAM G. GOODWIN AND ABRAHAM L. FREEDLANDER, OF DAYTON, OHIO, AS-

SIG-NORS, BY MESNE ASSIGNMENTS, TO THE DAYTON RUBBER MANUFACTURINGCOMPANY, OF DAYTON, OHIO, A CORPORATION OF OHIO.

BELT-CUTTING MACHINE.

Application filed March 3, 1924.V Serial No. 696,467.

This invention relates to belt-cutting machines and is designed as animprovement upon that part of the machine set forth in the applicationof Messrs. Russell, Farrell and Meyer, filedrJan. 17, 1924, Ser. No.686,-

740, which relates to means for preventing the endless roll of beltingfrom slipping or shifting sideways on the supporting rolls during theperiod of cutting the roll into individual belts, of which pendingapplication The Rubber Development Company, the assignee of thisapplication, is the owner,

Y as shown bythe assignment of record in the Patent @Hice The feature ofpreventingthe roll of belting material from shifting on the supporting'rolls longitudinally of their axes iscarried out in the; presentinvention by the provision of means to adjust the relation of the tworolls out of parallelism, sol that one roll will be positioned at alslight inclination to the other, whereby the roll of belting isprevented from shifting laterally in either direction and in this way\the roll of belting is made to revolve in a certain definite; plane sothat the knives used to sever the rolll into individual belts willproperly act on the roll of belting and cut it along straight lines.

It is a further object of the invention to providea rotating gauge whichVwillindicate to the opera-tor in which direction the roll of beltingis` tending to move and thereby enable him tol adjust the roller up ordown as conditions may require. Y

In the example illustrated, only the upper roll is made.v adjustableto-varyy its parallelism to the other roll but it is'obvious that eitheror both rolls may be adjusted in carrying this object into effect.

In the-accompanying drawings: f

Figure 1 is a front elevation of a belt cut-ting machine; embodying ourinvention;

Figure. 2 is al sectional view taken on the line 2-2 of. Figure 1;

Figure 3is a sectional view takenon the line 3-3 of Figure 1;

Figure 4 is a sectional view taken on the line 4-4fof Figure'l andv YFigure 5 is a detail of the locking collar. In these drawings, thenumeral 1 designates .the general base of the machine to which ourinvention isfapplied. The base 1 has a top -2 on which is tted abed-likepart. 3,

the upper portion of which, as shown at 4,

isfashioned into stationary ways on which is mounted the cutting knivesfor severing' the roll of belting into individual belts. table is formedwith a trough to receive the dripping of the water which is delivered tothe endless roll of belting material during the cutting operation. Y

At each side of the machine, as shown in Figure 1, are standards 6 and7, the former at its base constituting a compartment 8 in which islocated for driving mechanism for operating the arbor or shaft of thelower supporting roller. These standards 6 and 7 have formed on themways 9 and 10 respectively;

On the ways 9 are mounted slides 11 and on the ways 10 are mountedslides 12. These slides are adapted to be adjusted up and down more orless, as fully set forth in the above mentioned application.

IVe shall now refer to the manner of mounting the upper supportingroller 13 in relation to the slides 11 and 12. The slide 11 forms abearing 14 carried by a sleeve 15, having a slot 16. A shaft 17 iseccentrically mounted in the bearing 14' andv is adapted tohave one endof the roller 13 mountedv thereon'. The: sleeve landits supporting ban18 are mountedon the' s1idev11 in anysuitable manner.`

For the other end: of the shaft 17 there is provided a bearing 19mounted in a sleeve .20-which is'sustained by member 21l secured to theysupporting bar 18 extended rigidly fromv theslide l1. The sleeve 20 hasapertures 2121 .which receive pivot screws 22 which enter the bearing-19 and permit a slight. rocking movement to the same and thev shaft 17carried thereby. This pivotal mountin'gpermitsthe other end of the shaftto be adjusted for the purpose desired, as hereinafter; set forth.vSpacing collars 23 are interposed betweenatwo members of the supportingbar '18.- and held in position by bolts and nuts 24. Inrorder to steadythe bearing sleeve 20- and prevent vibration, a bracket 25 is mounted onthe slide 12 and extended under the sleeve 2O to support it asindicatedat 26. This-bracket is mounted to swing away from the bearingsleeve 20 by means of its pivotal connectionwith rod 27 which extendsthrough-the bracket'. T he primaryl purpose of swinging the bracket 25awayvfrom the bearingV sleeve 2O isto permit the endless roll of beltingmaterial, to be presently referred to, to be slipped over the supportingroll 13.

Referring now to the manner of mounting the lower supporting roller 28,one end of this roller receives a screw threaded projection n a studshaft 29 carried by the standard 6. This shaft may be driven in anysuitable manner, as by a motor fully shown and described in the abovementioned application. A hand lever 3l is provided for starting orstopping the mechanism for for rotating the shaft 29.

rlhe lower supporting roller 28 is the roller which is positivelyrotated, the ,roller 18 merely travelling with the endless roll ofbelting which is positively driven by the roller 28.

Thus by the adjustment of the upper roller 13 with respect to theposition of the lower roller the belting material is put under propertension, while the rotation of the lower roller causes the belting` totravel against the knives by which it is to be severed into separatebelts.

Referring to the other end of the lower suppor ing roller 28 and themanner of mounting same, it will be seen that a stud shaft-8a carries ablock 33 adapted to rest within the jaws 34; of a bracket 85 connectedwith the slide 12 by being pivoted on the rod 27 carried by the slide.This bracket has lugs 86 and 37 which lit upon the rod 2i and givevert-ical rigidity to the bracket.

These parts are 'sufliciently tight as to canse the bracket 35 tomaintain its normal position in sustaining` its end of the roller 28,but which is yet capable of being swung laterally to permit the endlessroll of belting to be slipped over the supporting roller 28 at` the sametime it is slipped over the'corresponding end of the other supportingrroller 13.

rl`he instrumentalities for severing the roll of belting material intoindividual endless belts and the manner of mounting and operating` suchinstrumentalities are the same as in the application above referred toand it will therefore not be necessary to illustrate or describe them indetail. 38 designates one of the movable plates mounted on the ways 4.This plate carries one of the knife holding bars 39 having oblique slots40 therein'for the reception of the knife blades ll. l-land wheels Ll2and 13 are provided for adjusting the knives to and from the roll ofbelting. rllwo wheels have been used to enable the operator to employboth hands or to have a hand operated shaft near him no matter whetherhe is standing at the front of the machine nearest t-heV right handside, or nearest the left hand side. To pre vent theknive-sbeing'accidentally adjusted inst the lower roller 28, a stop deviceronsisting of a rod @A and a thumb nut is Leiaese provided. During thecutting operation water is supplied to the roll of belting through thepipe 46. A hood 47 held by an arm 48 aids in properly directing thewater.

l.Ve shall now refer to the means for preventing' the endless roll ofbelting material from travelling lengthwise on the rollers 18 and 28.Such rolls of belting material when formed are usually smaller in thecentral part than at either end and one end is often of greater diameterthan the other end. The means for placing the roll of belting materialunder tension after placed on the rollers 18 and 28 will tend to makethe roll'of belting material uniform throughout before the cuttingknives are brought into contact therewith, but it has been foundV inpractice that the greater circumference of one end of the roll ofbelting will not always be entirely equalized by the tensioningmembers', and that when the roll of belting is rotated at a very highrate of speed as is essential for the cutting operation, the roll ofbelting will tend to travel lengthwise on the rollers 18 and To overcomethis disadvantage we have provided a special form of adjusting andlocking` device which have been found in practice to be efficient andprevent the roll of belting from travelling longitudinally on therollers. lnthe present instance we have applied our invention to theupper roller 13, but it will be understood that it may be readilyapplied to either roll or to both, and we therefore do not wish to Vbelimited to the particular application of the invention here shown anddescribed.

ln Figure 1 we hav shown a rotating gauge t9 so positioned that when theroll of belting material has'been placed on the rollers 13 and 28 andthe rollers adjusted by the means provided on the slides 11 and 1-2 forputting the roll of belting under tension, the edge of the roll adjacentthe rotating gauge should. just touch the same when the roll of beltingis being rotated. If after tensioning the roll of belting and startingthe machine, it is found that the roll of belting tends to travel awayfrom the rotating gauge or toward it, which latter will beV indicated bya buckling of the roll of belting, the operator will know that the rollof belting is of greater diameter at one end or the other. llo overcomethis tendency of the roll of belting to travel lengthwise of the rollersby reason of one end being larger than the other, we have provided meansfor adjusting one end of one of the' rollers carrying the same andmaintaining it in such adjusted position, so that the rollers 18 and 28will not be parallel to one another. This means consists of an adjustinghandle having a reduced port-ion 51 which enters a recess in the bearinglei. rlhis handle maybe moved through the slot 1G in the sleeve 15 toraise' or lower the shaft 1T and hence the roller the shoulder 57 on theshaft 17 and has a cut-away portion adapted to have a locking` lit withthe bearing 14. Then the adjusting handle 50 has been moved to thedesired extent, the handle 54 attached to the shaftA :33 is operateduntil the locking,` colla-r 56 is forced into engagement with thebearing 1li thereby locking it against movement. It will thus be'seenthat the end of the roller 13 at the left hand side of the machine maybe adjusted up or down which will provide for preventing the roll ofbelting from moving either to the right or to the left of the machine.If the roll of belting,` is tending to move to the left of the machine,the roller 13 will be raised and if it is tending to move to the rightof the machine, the roller will be lowered, the rotating gauge 49serving to inform the operator of any lengthwise travel of the roll ofbelting. This rotating gauge also serves as a stop for the roll ofbeltinv.

Having thus fully described our invention, what We claim as new anddesire to secure by Letters Patent, is

1. In a machine of the character described, the Combination withsuperposed supporting rollers adapted to carry and rotate an endlessroll of belting, of adjusting devices applied to one end of one of saidrollers and adapted to raise and lower said end to vary the verticaldistance between the axes of the rollers, and means for pivotallymounting the other end of said roller to which the adjusting' means isapplied.

2. In a machine of the character described, the combination withsupportingl rollers adapted to carry and rotate an endless roll ofbelting, means to effect such rotation, means for adjusting,I one ofsaid rollers relatively to the other to exert tension on the roll ofbelting', means to determine the position of said roll of beltingrelatively to said rollers, of means for adjusting one end of one ofsaid rollers to vary the vertical distance between the axes of therollers, and means for pivotally mounting` the other end of said roller.

3. In a machine of the character described, the combination withsupporting,` rollers adapted to carry and rotate an endless roll ofbelting, means for tensioning said roll belting, means for rotating`said roll of belting, means to determine the lateral travel of said rollof belting relatively to said rollers, means to adjust one end of one ofsaid rollers and means to pivotally mount the other end of said roller,cutting instrumentalities adapted to be adjusted relatively to said rollof belting.v and to sever the same into a plurality of belts.

In testimony whereof, we aix our signatures.

WILLIAM G. GOODWTIN. ABRAHAM L. FREEDLANDER.

